Since blue roses do not exist in nature, as roses lack the specific gene that has the ability to produce a "true blue" color, blue roses are traditionally created by dyeing white roses. [ citation needed ] In a book entitled Kitab al-felahah [1] written by Ibn al-‘Awwām al-Ishbīlī [2] in Arabic in the 12th century, and translated into French by J. J. Clement as Le livre de l'agriculture, [3] there are references to azure blue roses that were known to the orient. These blue roses were made by placing a blue dye into the bark of the roots.

The book published by Irving Andre and Gabriel Christian in 2009 is now available online in e-book format at Shelf Wise . Read the press release here . Read more about the book here .